Zzyj.HeaderView = Em.View.extend({
    templateName: 'header',
    didInsertElement: function() {
         $('.main_title_icon_right').click(function(){
             var menu = $('.pull_down');
             if (menu.css("display") == "none") {
                menu.fadeIn();
             } else {
                 menu.fadeOut();
             }
         });
    }
});
